This Article is the first scholarly analysis of knives and the Second Amendment. Knives are clearly among the “arms” which are protected by the Second Amendment. Under the Supreme Court’s standard in District of Columbia v. Heller, knives are Second Amendment “arms” because they are “typically possessed by law-abiding citizens for lawful purposes,” including self-defense.

Bans of knives which open in a convenient way (bans on switchblades, gravity knives, and butterfly knives) are unconstitutional. Likewise unconstitutional are bans on folding knives which, after being opened, have a safety lock to prevent inadvertent closure.

Prohibitions on the carrying of knives in general, or of particular knives, are unconstitutional. There is no knife which is more dangerous than a modern handgun; to the contrary, knives are much less dangerous. Therefore, restrictions on the carrying of handguns set the upper limit for restrictions on knife carrying.

The Article is just the beginning of long overdue scholarly analysis of laws about knives. Not all households own firearms, but almost every household owns a knife, even if we do not count table knives. Issues involving knife carrying come up quite frequently in state criminal courts, but the legal academy has thus far failed to provide the courts with useful guidance. Persons who are interested in writing on Second Amendment issues, and who wish to make an original contribution, will find that there is plenty to write about.